|Publication number||US8134513 B2|
|Application number||US 12/796,405|
|Publication date||Mar 13, 2012|
|Filing date||Jun 8, 2010|
|Priority date||Sep 10, 2004|
|Also published as||US7733281, US20060055611, US20100242261|
|Publication number||12796405, 796405, US 8134513 B2, US 8134513B2, US-B2-8134513, US8134513 B2, US8134513B2|
|Inventors||Jeyhan Karaoguz, James Bennett|
|Original Assignee||Broadcom Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Classifications (12), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present application is a CONTINUATION of U.S. application Ser. No. 10/937,315, now issued U.S. Pat. No. 7,733,281, filed Sep. 10, 2004. The above-identified application is hereby incorporated herein by reference in its entirety.
1. Field of Invention
The present invention relates to broadband access to data through multiple mechanisms in a home or business. In particular, the present invention is directed to combined antenna structures for satellite and broadband access and the provision for transmission and receipt of data through a common infrastructure.
2. Description of Related Art
The availability of the distribution of programming in the United States and abroad via satellite is ubiquitous. Consumers position a satellite dish, or have the same installed, to communicate with satellites that are in geosynchronous orbit and are able to send and/or receive data. Different types of satellite dishes can be used, based on the provider of satellite data, as well as on the number of satellites that are to be received by the satellite dish antenna. Currently, such data has an approximate downstream, i.e. from the satellite to the satellite receiver connected to the satellite dish, throughput of about 40 megabit per second. This allows for the receiver to readily receive data, such as television schedule data, as well as video and other programming, and to display that data to the end user. There are at present many different types of satellite services providing satellite television programming, as well services providing Internet access through satellite communication.
However, the upstream, i.e. from the receiver to the satellite, speeds are much less. The upstream path, through, for example, the Ka-band, provides only for low bandwidth at rates of approximately 3 MHz. The disjoint upstream and downstream paths are understandable because of the number of users of the service. In other words, there are many end users seeking to receive the same data, i.e. television programming, and the need to send data upstream at a rate similar to the downstream rate is not present. Thus, while the difference in the upstream and downstream rates poses no real problem for satellite television, the difference becomes a distinct disadvantage if a user sought to use the satellite infrastructure to send and receive data at parity rates.
Thus, there exist many satellite television users that have the capacity to receive high speed data, i.e. their satellite systems, but must utilize other means to provide Internet access or send data upstream. Such access could be through dialup connections or through Digital Subscriber Line (DSL) or cable modems. All of those options require additional wiring or limit the access rate. In satellite based Internet access, the above-discussed disparity in upstream and downstream rates usually requires for a user having such satellite based Internet access to have an additional upstream path, such as through DSL or cable modems. This creates a dichotomy for the end user in that the user must have dealings with both satellite service providers and cable service providers, where the providers distribute overlapping services.
Additionally, other types of high speed data access are also being developed. One such technology is covered through various incarnations of Institute of Electrical and Electronics Engineers (TREE) 802.16 standard. Such access is often referred to as broadband access, Wimax or fixed broadband wireless. IEEE 802.16 is a specification for fixed broadband wireless networks that use a point-to-multipoint architecture. The standard defines the use of bandwidth between the licensed 10 GHz and 66 GHz and between the 2 GHZ and 11 GHz (licensed and unlicensed) frequency ranges and defines a Media Access Control (MAC) layer that supports multiple physical layer specifications customized for the frequency band of use and their associated regulations. 802.16, depending on the embodiment, supports data rates of between 32-134 Mbps at 28 MHz channels, up to 75 Mbps at 20 MHz channels or up to 15 Mbps at 5 MHz channels. 802.16 supports these very high bit rates in both uploading to and downloading from a base station up to a distance of 30 miles to handle such services as Internet Protocol (IP) connectivity, Voice over IP, and Time Division Multiplexing (TDM) voice and data.
However, for most incarnations of wireless broadband access, there is need for an additional antenna to receive the signal. Additionally, in some types of broadband access, there is a need for a line-of-sight between the source and the receiving antenna, often requiring that the antenna for broadband access to external to a home or office and requiring that the antenna to be directionally configurable to receive the signal. However, this may require complicated installation and positioning and, in environments where satellite communication is available, a duplication of infrastructure. Thus, there is a need in the prior art for systems that would allow for the joint installation and utilization of the over-the-air data transfer technologies.
According to one embodiment of the invention, a method of installing multiple over-the-air antennas is disclosed. The method includes the steps of mounting a satellite antenna to a installation surface, such that the mounting allows the satellite antenna to be aimed at a satellite, attaching a broadband access antenna to one of the installation surface and a portion of the satellite antenna, such that the attaching allows the broadband access antenna to be aimed at a broadband access source, connecting first wiring from the broadband access antenna to a first downconverter and second wiring from the satellite antenna to a second downconverter, providing outputs of the first and second downconverters to a cable in communication with at least a satellite receiver and positioning, on at least a coarse scale, the satellite antenna and the broadband access antenna such that they are approximately pointed at the satellite and the broadband access source, respectively.
Additionally, the first downconverter and the second downconverter may be a common downconverter, where an output of the common downconverter to may be provided to a single cable in communication with at least a satellite receiver. Additionally, at least one additional broadband access antenna may be provided and attached to a support section of the satellite antenna. The at least one additional broadband access antenna may be a directional broadband access antenna or a non-directional broadband access antenna
In addition, the step of attaching a broadband access antenna may include attaching the broadband access antenna to the portion of the satellite antenna and the step of positioning the satellite antenna and the broadband access antenna may be accomplished by adjusting an adjustment mechanism on a coupling between the satellite antenna and the broadband access antenna. Also, a signal from a terrestrial antenna may be coupled into one of the first downconverter and the second downconverter.
According to another embodiment, a combined satellite and broadband access antenna assembly is disclosed. The assembly includes a satellite antenna, having a mounting structure that is configured to mount to an installation surface that allows the satellite antenna to be aimed at a satellite, and having a first output wiring, a broadband access antenna, attached to one of the installation surface and a portion of the satellite antenna, such that the attaching allows the broadband access antenna to be aimed at a broadband access source, and having a second output wiring and a common downconverter, having inputs connected to the first and second wiring and an output to a cable in communication with at least a satellite receiver.
According to another embodiment, a downconverter for signals received from multiple over-the-air antennas is disclosed. The downconverter includes a satellite antenna input, for receiving a first signal from a satellite antenna, a broadband access antenna input, for receiving a second signal from a broadband access antenna, downconverting circuitry, receiving at least the first and second signals and providing a downconverted output signal, at least one output port, for outputting the downconverted output signal and a common circuit providing connections between the satellite antenna input, the broadband access antenna input, the downconverting circuitry and the at least one output port.
According to another embodiment, a downconverter for signals received from multiple over-the-air antennas is disclosed. The downconverter includes a satellite antenna input means for receiving a first signal from a satellite antenna, a broadband access antenna input means for receiving a second signal from a broadband access antenna, downconverting circuitry means for receiving at least the first and second signals and providing a downconverted output signal, output port means for outputting the downconverted output signal and common circuit means for providing connections between the satellite antenna input, the broadband access antenna input, the downconverting circuitry and the at least one output port.
These and other variations of the present invention will be described in or be apparent from the following description of the preferred embodiments.
For the present invention to be easily understood and readily practiced, the present invention will now be described, for purposes of illustration and not limitation, in conjunction with the following figures:
In embodiments of the present invention discussed herein, a combination of an antenna for receipt of satellite signals and an antenna for receipt of broadband access allows for many improvements over the prior art. The combination of antennas allows for both antennas to be installed at the same time and allows for the required shared infrastructure to also to be installed concurrently. The combination of antennas also allows for coarse directional aiming of both antennas to be performed in concert and for the antennas to share common infrastructures, such as electronic circuitry and cabling.
A combined satellite antenna and broadband access antenna, according to one embodiment, is illustrated in
The satellite antenna 110 is supported to an attachment support 116, which affixes the satellite antenna to a support 100. The support 100 can be a portion of a building housing the satellite receiver or may be a pole if the satellite antenna needs to be so mounted to receive a signal from the proper satellite. The attachment support 116 is connected to the support 100 through an adjustable connector 118. the adjustable connector allows for partial positioning of the satellite antenna to receive signals from the satellite. Additional adjustment mechanisms, not illustrated, are provided closer to the dish portion 114 to allow for positioning over additional degrees of freedom.
Also illustrated in the combined antenna assembly is a broadband access antenna 120. According to certain embodiments of the invention, the broadband access antenna is affixed to the support sections of the satellite antenna 110. Alternatively, the broadband access antenna could be mounted next to but not attached to the satellite antenna. Additionally, while
As illustrated in
Through the present invention, multiple types of signals can be handled through a single component.
An additional embodiment of the downconverter assembly 300 is illustrated in
In addition to use of common installation, circuitry and cabling, the coupling of multiple antennas together also has additional benefits, according to some embodiments. In the case of directional broadband access antennas, those antennas must be aimed in order to achieve proper communication. Since the satellite antenna must be aimed to achieve communication with the satellite, the aiming of one antenna can be used to provide adjustment of another, at least to a coarse degree. As illustrated in
As illustrated in
The invention also addresses the limitation found in satellite systems where the upstream data stream is limited in the amount of data it can carry. The invention also addresses the need of new broadband wireless systems that require new antennas and infrastructures to compete with preexisting broadband systems. Since both systems function in the 11 Ghz band, the broadband access and the satellite systems can share common technology to down convert both signals. In addition, both down-converted signals can be transported using the same wiring to a common set-top box or to separate systems where their respective signals are used. The use of common wiring may be utilized through the multiplexing of the different types of signals at different carrier frequencies.
Although the invention has been described based upon these preferred embodiments, it would be apparent to those skilled in the art that certain modifications, variations, and alternative constructions would be apparent, while remaining within the spirit and scope of the invention. In order to determine the metes and bounds of the invention, therefore, reference should be made to the appended claims.
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|U.S. Classification||343/757, 343/873|
|Cooperative Classification||H01Q1/1257, H01Q25/002, H01Q3/08, H01Q21/28, Y10T29/49016|
|European Classification||H01Q25/00D4, H01Q1/12E1, H01Q21/28, H01Q3/08|
|May 30, 2013||AS||Assignment|
Owner name: BROADCOM CORPORATION, CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KARAOGUZ, JEYHAN;BENNETT, JAMES;REEL/FRAME:030515/0842
Effective date: 20040908
|Sep 30, 2015||FPAY||Fee payment|
Year of fee payment: 4
|Sep 30, 2015||SULP||Surcharge for late payment|
|Feb 11, 2016||AS||Assignment|
Owner name: BANK OF AMERICA, N.A., AS COLLATERAL AGENT, NORTH
Free format text: PATENT SECURITY AGREEMENT;ASSIGNOR:BROADCOM CORPORATION;REEL/FRAME:037806/0001
Effective date: 20160201